package jacob.util;

import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * Created by zjl on 2017/12/30.
 */
public class HttpClientUtil {

    private static Logger logger = LoggerFactory.getLogger(HttpClientUtil.class);    //日志记录



//    public static JSONObject httpPost(String url,JSONObject jsonParam, boolean noNeedResponse){
//        //post请求返回结果
//        HttpClient httpClient = new HttpClient();
//        JSONObject jsonResult = null;
//        HttpPost method = new HttpPost(url);
//        try {
//            if (null != jsonParam) {
//                //解决中文乱码问题
//                StringEntity entity = new StringEntity(jsonParam.toString(), "utf-8");
//                entity.setContentEncoding("UTF-8");
//                entity.setContentType("application/json");
//                method.setEntity(entity);
//            }
//            HttpResponse result = httpClient.execute(method);
//            url = URLDecoder.decode(url, "UTF-8");
//            /**请求发送成功，并得到响应**/
//            if (result.getStatusLine().getStatusCode() == 200) {
//                String str = "";
//                try {
//                    /**读取服务器返回过来的json字符串数据**/
//                    str = EntityUtils.toString(result.getEntity());
//                    if (noNeedResponse) {
//                        return null;
//                    }
//                    /**把json字符串转换成json对象**/
//                    jsonResult = JSONObject.fromObject(str);
//                } catch (Exception e) {
//                    logger.error("post请求提交失败:" + url, e);
//                }
//            }
//        } catch (IOException e) {
//            logger.error("post请求提交失败:" + url, e);
//        }
//        return jsonResult;
//    }


    public static JSONObject send(String url, Map<String,Object> map, String encoding) throws ParseException, IOException {
        String body = "";

        //创建httpclient对象
        CloseableHttpClient client = HttpClients.createDefault();
        //创建post方式请求对象
        HttpPost httpPost = new HttpPost(url);

        //装填参数
        List<NameValuePair> nvps = new ArrayList<NameValuePair>();
        if(map!=null){
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                nvps.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString()));
            }
        }
        //设置参数到请求对象中
        httpPost.setEntity(new UrlEncodedFormEntity(nvps, encoding));

        System.out.println("请求地址："+url);
        System.out.println("请求参数："+nvps.toString());

        //设置header信息
        //指定报文头【Content-type】、【User-Agent】
        httpPost.setHeader("Content-type", "application/x-www-form-urlencoded");
        httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");

        //执行请求操作，并拿到结果（同步阻塞）
        CloseableHttpResponse response = client.execute(httpPost);
        //获取结果实体
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            //按指定编码转换结果实体为String类型
            body = EntityUtils.toString(entity, encoding);
        }
        EntityUtils.consume(entity);
        //释放链接
        response.close();
        /**把json字符串转换成json对象**/

        JSONObject jsonResult = JSONObject.parseObject(body);
        return jsonResult;
    }
}
